"Today we actually took out Kinder Morgan. Kinder Morgan put their tail between their legs and they ran back to Texas," Stewart said.

"The only opponent we have left is Justin Trudeau. He's the only one that's pushing this pipeline through. You think we can take him out?"

Lawsuits continue

There are a number of lawsuits against the pipeline expansion project, something that gives some opponents like Rueben George, also from the Tsleil-Waututh Nation, hope.

"We're already suing Canada. You know, we've got court cases ... in the Federal Court of Appeal with allies and different nations and each one had about five arguments in total. They have to win them all. We only have to win one or two to stop this, and I believe in the Canadian constitution protecting our Indigenous rights," George said.

A protest sign at a rally against the Trans Mountain pipeline in Vancouver Tuesday evening. (CBC)

Environmental groups say the Canadian government's pipeline buyout is reckless and raises questions about the country's commitment to battling climate change.

"We are furious. I was in shock this morning, I didn't think the government was actually this stupid to buy a pipeline that has 17 court cases against it," said Peter McCartney from the Wilderness Committee.

"This is now Canadian taxpayer money that is putting our coast here at risk of an oil spill. It's just...it boggles the mind that they could think this is a good move for Canada."